Supports the LARGEST SIZE mailboxes available.  The Handy Post XL sleeve (mailbox not included) is constructed of maintenance-free and durable PVC (Vinyl) and comes with a Lifetime Warranty against peeling, flaking, blistering, corroding, rotting. abnormal discoloration and manufacturing defects. It is designed to fit over an existing or new wood 4x4 (actual 3.5"x3.5") post, or can fit over many no-dig supports of similar dimensions. If your mailbox is secured to any type of wood 4x4 configuration, you can modify it by cutting it to a straight up 41" height or less to accept The Handy Post XL. The Handy Post XL is designed to accommodate a single mailbox of the LARGESTsize. The cross arm is 18" across and 5" wide and will accommodate up to 100 lbs.  With online shopping on a seemingly endless climb, larger mailboxes will be desired and the Handy Post XL will accommodate the LARGEST sizes. This aesthetically pleasing, economical product will enhance any home, business or neighborhood property. The Handy Post XL will add character to any setting. Conveniently packaged with stainless steel hardware and installation instructions included.